Full Product Manual

88
1 S
DC
EXAMPLE 2
Peak Pulse Amps: 100 amps
Base Amps: 50%
Pulse Time On : 50%
DC Pulse Frequency: 25Hz
AMPS
100
50
EXAMPLE 1
Peak Pulse Amps: 100 amps,
Base Amps: 50%
Pulse Time On: 50%
DC Pulse Frequency: 1 Hz
EXAMPLE 3
Peak Pulse Amps: 100 amps
Base Amps: 25%
Pulse Time On: 75%
DC Pulse Frequency: 3 Hz
AMPS
DC
Setting up the pulse is not a process where a xed
adjustment procedure can be assigned or rigidly
recommended. Changes to frequency, balance, and
time will skew the nal result. A slow pulse with a
equal 50% pulse time on and somewhere around a
50-75% Pulse Base Amp setting is typically used to
help with timing the addition of ller metal to the
weld puddle. A higher pulse frequency level that is
combined with variations in Pulse Time On and a
narrow/wider ratio can be used to prevent burn
1 S
25
100
2 S
AMPS
DC
1 S
3 S
50
100
Pulse Amps
Welding Amps
Pulse Time ON
Pulse Hz
TIG Pulse. The TIG pulse creates two amp values, a
high and a low value that cycle back and forth be-
tween each other while welding. The upper amper-
age is called the “TIG Pulse Amps” (sometimes re-
ferred to as “Peak” current.) The lower amperage is
called “TIG Pulse Base Amps “ (sometimes called
“background” or “base“ current). This creates a sit-
uation where penetration can be achieved without
overheating the metal, particularly on metals that are
prone to structural deterioration or burn through. In
effect you are creating an average of amps. . This
welder features three adjustable parameters con-
cerning the TIG pulse:
1. Base Pulse Amps. Base Amps is the low Am-
perage value of the pulse. When you adjust the
base Amps in pulse mode, you are actually set-
ting a ratio of base Amps to peak welding
Amps. Base amps are expressed as a percent-
age of Peak welding Amps. So, when you set
base amps, you are only setting it as a percent-
age, not the actual Amps. As you increase Peak
welding Amperage through the use of the foot
pedal, or the panel control, the pulse will main-
tain the same ratio of Base to Peak welding
Amps, raising the base Amps automatically. To
illustrate: Adjust the Peak (main welding) Amps,
to 100. Set the base Amps to 50%. This will
yield a 50 Amp value for the base Amps. The
foot pedal controls both Peak welding Amper-
age and Base Pulse Amperage simultaneously,
using the pre-set ratio.
2. Pulse Frequency. Pulse speed or frequency as
it is referred to is measured in the standard unit
“Hertz.” Simply, it is the number of pulses per
second that occur. Pulse frequency controls
the arc constriction and also helps with heat
management.
3. Pulse Time On (Balance). Pulse Balance is the
percentage (%) of time that the pulse stays in
the TIG (Peak) pulse Amp stage of the cycle.
Increasing the Pulse time-on will increase the
duration the Peak Amp stage of the cycle which
in turn will increase the heat and will increase
penetration. Pulse Balance is also known in the
industry as duty cycle. For welding purposes
the term “Pulse Time On” is used here.
TIG OPERATION AND THEORY
Section 3 Basic Theory and Function